David Halpern

David Halpern has written at least 1 book. Their most popular book is Inside the Nudge Unit: How Small Changes Can Make a Big Difference with 3 saves with an average rating of 4⭐.

They are best known for writing in the genres one, asdfsa, and Asdfsa.

mone, asdfsa, and Asdfsa are their most common moods.